[1] In 1933, he married Hélène Ostrowska, who was a fashion model for the House of Worth.
[2] From the late 1940s onwards, she was a shoe designer and boutique owner.
In August 1940, Louis and Hélène sailed on one of the last liners bound for the United States until the end of the war.
[2] In New York City, they established the American branch of the business.
[3] Arpels died at his home near Paris on 20 March 1976, aged 89.